2026-04-11T23:48:31.43Z45.228166666667-112.312166666675.02manualconfirmedUSGS0.51ml1Origin/20260413195632.835726.237026Magnitude/20260413195632.835797.237027USGS19 km WSW of Alder, Montanaregion namembcatalogmb90131358contributorID